fix: treat loopback aliases as equivalent in isSameOrigin#5659

ThierryRakotomanana wants to merge 2 commits intowebpack:mainwebpack/webpack-dev-server:mainfrom

ThierryRakotomanana:fix/isSameOrigin-loopback-alias-mismatchThierryRakotomanana/webpack-dev-server:fix/isSameOrigin-loopback-alias-mismatchCopy head branch name to clipboard